Alam mo, it depends kung saan ka nagsisimula, if you're counting pregnancy weeks, it's from your last menstrual period (LMP), so kung sabihin ang doctor mo 8 weeks, that's 8 weeks from the first day ng last period mo. But if you're talking about baby's age after birth, then you count from the delivery date, so 1 week old means 7 days after birth, 2 weeks is 14 days, ganyan lang! A few of us moms used to get confused dito kaya gumawa kami ng small calendar or marker sa phone para hindi mawala count, super helpful!